Improvement in machines for embossing rings



J'. J'ENNINGS'.

MACHINE FOR EMBos'sING RINGS.

No.174,422. Patented March 7,1876.

a A C o J a e.,v f y E l 6' a g l J Fig# O O I ,fo/1,71, Jennz'n NPEI'ERS, PHOTO-LIYHOGHAFHER, WASHINGTON D C `JonnjJennmejs,on Bestron, Mnssncnosnirs;

` f IMPuoveME'NTiN'MACHINES FoREMBosslNG rames..

` Speciication'formng partof Letters Patent No. 174,422, dated March 7, 1876; application led January 21,1876. y y,

\ To `all whom `itmcty concern: i

` Boston, of the county of Suiiolk and State ot Massachusetts, have invented a new and use'- `ful Improvement in Machinery for Embossing Rings and dohereby declare thesame to be fully described in' the` following specification and represented inthe `accompanying drawings, of which; t Figurel` is a top .view,Fig. 2 a front elevation, Fig.`3 an end'vie'w, Fig. 4 a longitudinal section, and Big5 a transverse section, of av ring-embossing machineembodying `my inventlon. f f

- In this machine aL`1nger-ring, While be ing embossedpisvsupported by and slides'laterally around a pin, the ring being moved on such pin by the embossing-die, i'orc'd with great pressure against the ring, and moved forward over and with it by suitable means .or mechanism.` y The pin, while the ring is upon it andin theact of being embossed, is l statlonary, or has noendwiseor rotary movement. i

To revolve a ring against an embossing die or tool by means of a rotary mandrel or spindle tted to the ring is a difficult, if not impracticable, matter, for in the 'proeessfof eln- 'bossing the -ring it becomes4 very. much stretched, and, as a consequence, it increases in diameter and loosensits hold on therotary mandrel. Witha stationary pin and an embossing-die, as shownin the accompanying drawings, the enlargement of the ring does not prevent the proper action of the embossing-die.

In the drawings, A denotes the frame ot' the machine, having a groove, a, extending transversely through its base b. It also has a pin, B, inserted longitudinally through the base and transversely through the groove a,

"two screws, h k, which; screwed through the caps and against'the boxes, serve to force the roller downward against a slide-plate orv die-carrier, E. This die-carrier E,`arranged between the bed andpressure-roller, supports an embossing-die, F, suitably fixed or applied to it. The die, as shown, extendsa short distance into thegroove a, which serves to guide the die in its rectilinear movement, over the ring. Furthermore, Vthe pressure-roller is grooved in and around its middle part, as shown at h', to receive an elastic metallic draf'tband or spring, H, which, fastened at one end to the roller, 'partially encompasses such roller. Near'its other eiid the spring H has a slot or vbutton-hole, v, made through it to catch upon a headed stud or button, 7c, extending from the carrier E near its rear edge.

' This elastic spring answers two purposesthat is to say, while the pressure-roller is being revolved it winds around itvsuch spring,

and causes it to draw forward the die-carrier,

so as tomove the die over and cause it to emboss the ring. This having taken place, the spring, on being drawn from underneath the roller, will be set free, and by its elastic force and the drop of the roller will suddenly not only throw the diecarrier ont of the frame A, but disengage itself from such die-carrier. Thus the spring, besides answering to advance the die-carrier, serves to automatically eject it from the frame, thereby saving the operative the necessity of drawing by his hand each die-carrier from the frame preparatoryto removal 'of the ring-supporting Y piu from the frame, or in order to remove the embossed ,ring and substitute one to be embossed.

The mode of using the machine will be easily understood by jewelers or others skilled in embossing.

l elaimi 1. In a machine for embossing rings, the combination of an embossing-die with a stationary or non-rotary spindle or pin for supporting the ring, and allowing said ring to turn or slide around the said pin or spindle while the die is in operation. y

v2. The combination' of the movable non-rotary spindle or pin B, the die-carrier E, and 

